Benchmark Women's Flame Resistant Feather Weight Coverall, HRC 1, Navy, Small Designed to protect against arc flash and flash fire Flame-resistant cotton is lightweight, non-abrasive, and breathable for use in warm environments Heat-resistance category is HRC 1 Full length zipper with flap closure to help reduce exposure Meets OSHA 1910.269 and 1910.960, NFPA 70E, HRC 1, ASTM F1506, and NESC 2012 specifications